Damper-regulator.



No. 648,!72. Patented Apr. 24, |900.l

l A. N. LUCKE.

DAMPER REGULATUR.

(Appumin nua ne@ 1s', 1899.) (No Model.) 2 Sheets-Sheet l.

WITNESSES: INVENTOR 5l/y@ f )Ww/ NM,

BY XW Z5 W Mmmm.

, AT TOBNEY (no Nudel.)

A. n. LockE.

Patented- Apr. 24, |900.

DAMPER REGULATOR.

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BY U/QJKJ/'mw ATTORNEY retos.

ALBERT N. LOCKE, OF SALEM, MASSACHUSETTS.

DAM PER-REGULATOR.

SPECIFICATION forming part of"1 Letters Patent No. 648,172, dated April 24,1900. I

Application filed December 12, 1899. Serial No. 740,045. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT N.` LOCKE, of Salemfin the county of Essex and State of Massachusetts,` have invented certain new and useful Improvements inDamper-Regulators, of which the following is a full, clear,

and exact description.

My invention relates to improvements iny damper-regulators such as are used` to control the damper, and consequently the heat,

of steam-boilers, whereby the steam maybe kept at a constant or essentiallyconstant pressure. are capable of giving close regulation are, as a rule, expensive and' more 'or less complicated. v

The object of my invention is to produce a very simple and cheap machine which isl adapted to give the closest regulation, which is so simple that it is not likely to getI out of repair, which is so compact as to occupy but little'space, and which 'has all its different parts accessible.l v A To these ends my invention consists of certain features of construction andl combinations of parts, which will behereinafter fully tion of the damper-regulator with the controlling-valve in vertical section.` Fig. 3 is av detail of the stem of the controlling-valve;y

' and Fig. 4 is a view similar to Fig. 3, but taken at right angles to the same. n

In carrying out my invention I .employ a steam-pressure chamber lO, which is in connection with the steamof the boiler through the pipe 10a and which thus feels the boilerpressure, and a second chamber 1l., which is g structure;` but for convenience I prefer 'to -make them separate, and they are bolted together to a convenient support or bracket l2.

These chambers are each provided with ilexiotherv end-carries the Weights 19.

The machines of this'class which ble diaphragme 13 and 2O of the usualA kind, l

and the upper diaphragm 13 is held in the customary ,way between binding-flanges and carries a common form of pressure-foot 14,

havin g` a post l5, engaging the seat 16 of the steam weigher orlever 17, which is fulcrumed at one' end in a lock-post 18 and which at the The arrangement of weights to balance the steampressure vis well known in this connection,

.audit will be noticed that the weights may be adjusted so that when they just balance the steam-pressurein the chamber lO the lever 17 will remain stationary; butif the pressure rises the weighing-lever 17V also rises, and if it falls thelever is depressed by the weights, which are thus rendered heavier than the steam-pressure.

The lower chamber ll is provided with a y 'the customary balance-weight 26, which is held adj ust'ably on the lever. The lever connects with the chain 27 and this is adapted to connect with the damper, as shown in Fig. 1.

The water to move the diaphragm 2O vis admitted tothe chamber 1l through the pipe 2S l -and is also exhausted through said pipe, the

supply and exhaust being controlled by a valve 29. This valve is connected with the se l water in the boiler by the pipey 30 and is also connected with an exhaust-pipe 3l. The stem 32 of the valve is vslidable longitudinally through the seat-rings 33, 34, 35, and 36, which for convenience are removable, and chambers are formed between the several seatrings. Thefstem has a port 37, so thatwhen this part is raised above the seat-ring 35 the water-supply passes up through the said seatring and so on through the pipe 28 to the moroo tor-chamber lvl; but when the stem is moved down the port through the ring 35 is closed and an exactly-similar port through the part 38 and ring 34opened, so that the exhaustwater may pass out through the ring 34 and the pipe 31.

The valve is not claimed in this application,

comprising the link 39, extending from thelever 17 downward, the' horizontal link 40, connected to the valve-stem 32 at one end and at the other pivoted to the rod 41, and the rod 1.1.1, extending from the link 40 to the damperlever 24.

The operation of the device is as follows: The steam-boiler pressure of course prevails in the chamber lO, and so long as the pressure just balances the weights 19 the steampressure will be just that which is desired and the levers 17 and 24 will remain practically motionless. It, however, the steam rises beyond the desired point, the diaphragm 13Ais of course pushed up and the weighinglever 17 is lifted, thus lifting the links 39 and 40 and raising the valve-stem 32. This closes the port through the ring 34E and opens the port at 37, so that the water-pressure comes in through the pipe 30, valve 29, and pipe 28 to the chamber l1, thereby depressing the diaphragm 20 and acting'on the lever 211, tilting the said lever on its fulcrum and slackeningthe chain 27, thus permitting the damper to close slightly,thereby diminishing the heat, and consequently reducing the boiler-pressure. The action of the lever 24 will cause the rod 41 to be raised, slightly tilting the thus pulling on the chain 27 and opening the chamber, thereby increasing the draft, and consequently the heat, so that the steampressure is raised. It will be noticed, therefore, that this structure, while being very simple and compact, provides for a very close regulation of steam, and it will be further 0bserved that the structure is very simple and inexpensive.v

y It will be noticed that the diaphragm 13 is in constant connection withv the boiler-pressure and that the diaphragm 2O is in connection therewith only when its controlling-valve is operated by the movement of the first diaphragm, and while the valve and the lower chamber l1 are connected with the water of the boiler, still it will be seen that the operation would be essentially the same, even if it were connected with the steam-pressure.

Having thus described my invention, I claim as new andV desire to secure by Letters Patent-'- 1. A damper-regulator comprising two superposed independent chambers arranged base to base with diaphragms at their outer ends, the first chamber being in constant connection with the steam-pressure and the second being adapted to connect with the boilerpressure, a weighted lever to balance the pressure of the upper diaphragm, a Second lever connected with the lower diaphragm and with the damper, a valve controlling the supply and exhaust of the lower chamber, and an operative connection between the two mentioned levers and the valve whereby the movement of the `leversis imparted to the valve.

2. A damper-regulator comprising two independent chambers arranged one above the other, having diaphragms at their outer ends, a weighted lever fnlcrumed above the upper chamber and operated by the diaphragm of said chamber, a dam per-lever adjacent to the lower chamber and operated by the diaphagm thereof, said lever being also adapted to be connected with the damper, means for admitting steam or other `fluid to the upper chamber, a slide-valve controlling the supply and exhaust of the lower chamber,and a link-andlever mechanism connecting the upper and lower levers and operating the stem of the valve, substantially as described.

3. The combination with the opposed steam and motor chambers and their iiexible diaphragms ot' the steam-weighing leverto balance the steam-pressure in the steam-chamber, the damper-lever operated by the diaphragm of the motor-chamber and adapted to connect with a damper, the slide-valve controlling the inlet and exhaust to the motorchamber, a lever as 40 operating the stem of vthe valve, and a link 4connection between the steam and damper levers and lever 0, substantially as described. l

Il. A damper-regulator comprising steam and motor chambers arranged one above the IIO other and eachV provided withfflexible diaphragms, va steam-weighing lever fulcrumed.

on the upper chamber and operated by the diaphragm of said chamber, a damper-lever fulcrumed beneath the lower chamber and operated by the diaphragm of said chamber, a slide-valve controlling the inlet and exhaust of themotor-chamber, and means for opening the inlet through the valve by the rise-of the Weighing-lever and for closing the inlet and opening the exhaust of the valve by the fall of the weighing-lever or the tilting of the damper-lever substantially as described.

` ALBERT N. LOCKE.

Witnesses: i

E. B. SPENCER, F. E. PHILLIPS. 

